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Test your basic knowledge |
Dairy Cattle And Reproduction
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Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. To remove/separate testicles from animal's body before animal reaches puberty
scrotal circumference (BSE)
Hard
humans: stress level vs sperm
castration
2. 114 days
rectal palpation (BSE)
cowper's gland
sperm cell
sow gestation
3. 30-38 hours after estrus cycle begins
Brown Swiss Cow
sow ovulation
cow estrus
seasonally polyestrous
4. 10-37 (21) days
scrotum
burdizzo
cow ovulation
mare estrus cycle
5. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
#1 cost in production
effects of estrogen
dartos muscle
Follical Stimulating in males
6. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)
dry matter and water
6-8 weeks
eminal vesicles
prostate gland
7. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood
femininity of a heifer
eminal vesicles
penis proper
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
8. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
femininity of a heifer
Dairy Cattle Lactation (standard)
hormones
behavioral signs of estrus
9. Help to signal hormone levels which we need both in the brain right next to each other.
ewe's estrous cycle
hypothalamus and pituitary gland
polyestrous
cervix
10. 4-6 days
mare estrus
mare's estrous cycle
Dairy Cattle Lactation (standard)
prostate gland
11. What helps regulate spermatogenesis?
testosterone
burdizzo
mare estrus cycle
sow estrus cycle
12. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
rectal palpation (BSE)
Dairy Cattle Gestation
Reasons for gestation length being affected
cow ovulation
13. Look for infection - split - and rupture of the penis
reason for seasonal breeding periods
oviducts
penis and prepuce observation (BSE)
libido test (BSE)
14. Failure to have both testis (gonads) descend
prostaglandin
why does the cow need fat deposits during pregnancy?
cryptorchid
cow ovulation
15. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
kidney stones also called ________ ___________ can develop in the sigmoid flexure
growth lost from castration methods (knife & band)
sigmoid flexure
sow estrus cycle
16. ~305 days (altough often longer due to breeding difficulties)
Dairy Cattle Lactation (standard)
van deferens
sow estrus
mare estrus cycle
17. 4-6 days
Lutinizing Hormone in males
Parturition
Dairy Cattle Gestation
mare estrus
18. Start of the reproductive tract for the female. located outside of the body
Bull's fibro-elastic penis
Hard
libido test (BSE)
vulva
19. Failure to have one testis (gonad) to descend
leydid or interstitial cells
mare ovulation
Blood
monorchid
20. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.
Hard
semen evaluation (BSE)
colostrum
seasonally polyestrous
21. Prevent the cow from getting an infection from the calve
Where livelihood is in agriculture
Dairy calves are removed from cow at birth to...
sperm cell
1. more cost effective - 2. powdered milk is in excess production
22. (male) pushes the testes outward toward the legs for a cool-down off of the body
cremaster muscle
Lutinizing Hormone in males
Jersey Cow
purpose of Breeding Soundness Exam (BSE) for males
23. Male on one pin and female on other side
estrous
libido test (BSE)
cow ovulation
#1 cost in production
24. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
vagina
eminal vesicles
testosterone
leydid or interstitial cells
25. 19-23 (21) days
mare gestation
urethra
Sperm growth rate
cow estrus cycle
26. What helps regulate spermatogenesis?
Grading choice
testosterone
mare ovulation
humans: stress level vs sperm
27. Larger the cow - more milk is produced; smaller the cow - less milk is produced
Size of cow in relation to the amount of milk produced
Brown Swiss Cow
~1 month
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
28. When are dairy cattle dehorned?
~1 month
mare's estrous cycle
cowper's gland
penis proper
29. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
Dairy Cattle Lactation (standard)
feeding a high producing dairy cow
penis and prepuce observation (BSE)
Holstein Cow
30. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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31. Animal which has been castrated after puberty
stag
rectal palpation (BSE)
mare estrus
growth lost from castration methods (knife & band)
32. 10-37 (21) days
rectal palpation (BSE)
testosterone
penis and prepuce observation (BSE)
mare estrus cycle
33. Animal which has been castrated after puberty
sigmoid flexure
mare gestation
testosterone
stag
34. Urinary calculi.
Follical Stimulating in males
dartos muscle
kidney stones also called ________ ___________ can develop in the sigmoid flexure
ewe estrus
35. 26 hours after estrus begins
ewe ovulation
cow gestation
Grading choice
cryptorchid
36. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
monorchid
penis sizes vs delivering methods
cow estrus cycle
Hormones from both the fetus and the mom.
37. 24 hours before end of estrus cycle
polyestrous
mare ovulation
Lutinizing Hormone in females
oviducts
38. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.
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39. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
cremaster muscle
functions of progestrone
mare gestation
butterfat
40. 2 month growth cycle. stored in the epididymis of the bull
oviducts
Sperm growth rate
penis proper
age and castration
41. ~60 days before calving
sertoli cells
dry-off time in dairy cattle
functions of progestrone
Mares
42. (male) pushes the testes outward toward the legs for a cool-down off of the body
uterus
vagina
cremaster muscle
Dairy Cattle Lactation (standard)
43. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
oviducts
Follical Stimulating in females
rectal palpation (BSE)
behavioral signs of estrus
44. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
Grading choice
growth lost from castration methods (knife & band)
cowper's gland
sigmoid flexure
45. 1. brain function - 2. blood flow - 3. willing female
what has to happen for males for copulation to occur
Hormones from both the fetus and the mom.
growth lost from castration methods (knife & band)
age and castration
46. Why Dairy calves are fed powdered milk.
1. more cost effective - 2. powdered milk is in excess production
prostaglandin
mare estrus cycle
monestrous
47. 114 days
semen evaluation (BSE)
cremaster muscle
sow gestation
burdizzo
48. Can survive ~7 days in cow. vast majority <48 hours
visual evaluation (BSE)
leydid or interstitial cells
Sperm survival specs
sow estrus cycle
49. Check feet and legs - look for masculine traits in build such as crest and muscling
vulva
elastrator
Grading choice
visual evaluation (BSE)
50. Implies the amount of estrogen production
Lutinizing Hormone in males
femininity of a heifer
cervix
Jersey Cow
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